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Allentown is a city located in Lehigh County, Pennsylvania, United States. It is Pennsylvania's third most populous city and the 224th largest city in the United States. As of the 2010 census, the city had a total population of 118,032 and is currently the fastest growing city in all of Pennsylvania. It is the largest city in the metropolitan area known as the Lehigh Valley, which had a population of 821,623 residents. Allentown constitutes a portion of the New York City Combined Statistical Area and is the county seat of Lehigh County. In 2012, the city celebrated the 250th anniversary of its founding in 1762.Located on the Lehigh River, Allentown is the largest of three adjacent cities, in Northampton and Lehigh counties, that make up a region of eastern Pennsylvania known as the Lehigh Valley. Allentown is 50mi north-northwest of Philadelphia, the fifth most populous city in the United States, 90mi east-northeast of Harrisburg, the state capital, and 90mi west of New York City, the nation's largest city.Make your own Allentown vacation itinerary, with a little help from those that know the place like the back of their hands, by using our United States travel itinerary planner.
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